Home / 209,000.26-288,421.19-113,508.55

Finding the Fourth Proportional to 209,000.26, 288,421.19 and 113,508.55

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Solution

The fourth proportional to 209,000.26, 288,421.19 and 113,508.55 is: 156,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,000.26 : 288,421.19 = 113,508.55 : x
  2. Step 2: Convert to fraction form
    209,000.26/288,421.19 = 113,508.55/x
  3. Step 3: Cross multiply
    209,000.26x = 288,421.19 × 113,508.55
  4. Step 4: Simplify right side
    209,000.26x = 32,738,271,066.17
  5. Step 5: Solve for x
    x = 32,738,271,066.17/209,000.26
  6. Step 6: Final answer
    x = 156,642.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.